Wiper for trimming-knives of linotype-machines.



W. C. REDFIELD.

WIPER FOR TRIMMING KNIVES OF LINOTYPE MACHINES.

APPLICATION FILED MAR. 25; 1912.

Patented Apr. 28, 1914.

3 SHEETSSHEET 1.

W. 0. REDFIELD. WIPER FQRTRIMMING KNIVES OF LINOTYPE MACHINES.

APPLIOATIbN FILED MAR. 25, 1912.

Patented Apr. 28, 1914.

3 SHEETS-SHEET 2.

FlL

APPLICATION FILED MAR. 25, 1912.

Patented Apr. 28, 1914.

3 SHEETS-SHEET 3.

adi 0 UNITED STATES PATENT OFFICE.

WILLIAM C. REDFIELD, OF CHICAGO, ILLINOIS.

WIPER FOR TRIMMING-KNIVES OF LINO'IYPE-MACI-IINES.

T 0 all whom it may concern:

Be it known that I, TILLIAM C. RED- rncLn, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in WVipers for Trimming-Knives of Linotype-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has for its object to provide a device for cleaning or wiping the trimming knives for the slugs delivered from linotype machines, and consists in the features of construction and combinations of parts hereinafter fully described and particularly claimed.

In the accompanying drawings illustrating the invention: Figure 1 is a view in elevation of a cleaning or wiping device embodying my invention showing its position in the linotype machine, certain parts of the latter known as the vise frame and the frame proper of the machine being indicated diagrammatically in dotted lines. Fig. 2- is a view similar to Fig. 1 showing the position of the device when the vise frame is turned to operative position. Fig. 3 is a view similar to Fig. 2 showing the elevator and the device for clean ing the trimming knives in another position. Fig. -'l is a fragmentary detail view in elevation of the inner face of the vise frame showing the first elevator and the trimming knives and the position occupied by my said cleaning device relatively thereto. Fig. -5- is a detail upper end elevation of my said cleaning device showing its position relatively to the trimming knives of the ma chine, the latter being indicated in dotted lines. Fig. 6 is a fragmentary view in elevation of the plunger which carries the cleaning blade. Fig. 7 is a similar view showing the cleaning device in end elevation. Fig. -S is a detail view in elevation of the cleaning or wiping blade. Fig. 9 is a fragmentary view in elevation of the upper end of the plunger carrying the cleaning or wiping blade shown in Fig. g

The particular object of my invention is to provide a cleaning or wiping device for the trimming knives of a linotype machine which may be easily attached to existing Specification of Letters Patent.

Application filed March 25, 1912.

Patented Apr. 28, 1914.

Serial No. 686,137.

machines without interference with the op erating parts as are essential to operate said cleaning or wiping device at the proper intervals relative to the delivery of slugs from the machine.

My said device comprises the plunger 1 consisting preferably of a rod which is square in cross-section and is reciprocably movable in suitable guides disposed on the inner face of the vise frame of a linotype machine. In the drawings one of said guides is indicated at 2 and consists of a projection provided in its free end with a recess in which said rod 1 is received. The other of said guides is disposed contiguous to the pivot indicated at 3 on which said vise frame swings, and consists of a shoulder 4 against which said plunger 1 abuts, the same being held in engagement with its guides by means of the flat spring 5 secured at one end to the vise frame contiguous to the pivot thereof and which bears at its other end against said rod between the ends of the latter. The last-named end of said spring is provided with two flanges or cars 6 between which the rod or plunger 1 is received and which serve to prevent lateral movement of the lower end portion thereof as will be obvious. Said spring also serves to maintain the knife wiper '7 carried by said plunger 1 in contact with the cutting edges of the trimming knives 8 of the machine. The said trimming knives are provided with beveled outer faces and the rod or plunger 1 is beveled on one corner, as at 9, to lie in contact with one of the beveled faces of one of said knives 8. The said knife or wiper 7 comprises a sheet metal plate made of any suitable material and which may be of any shape suited to the purpose. In the instance illustrated the said knife or wiper consists of an L-shaped plate, one arm of which extends laterally outwardly from the plunger and travels over the cutting edges of the knives 8, the other arm thereof terminating at one end in a beveled edge 10 and being provided in i other end with a beveled recess 11 in Which the head of a screw 12 is adapted to engage, the latt r serving to secure said knife wiper 7 to the upper end of said plunger 1. The said plunger 1 is provided in one face con tiguous to its upper end with a recess 7 for receiving the last-named arm of said knife wiper 7, said recess having one wall thereof undercut to receive the beveled edge 10 of said knife wiper and serving to prevent accidental. disengagement of the latter from said recess. The head of the screw 12 engages the similarly beveled face of the recess 11 and serves to force said last-named arm of said knife wiper downwardly so as to firmly engage the beveled edge 10 thereof in the undercut end portion. of said recess in a well-known manner, said wiper being thus very firmly and rigidly held in place on said plunger. Said plunger 1 is provided between its ends with an adjustable collar 13 to which one end of a plunger 1+ is rigidly secured. The said plunger 14L is provided with a straight arm 15 parallel with the plunger 1 and which passes through an opening in a plate 16 secured to the lower end of whatis known as the first elevator of the machine which is indicated at 17, said plate being suitably secured to a projection at the lower end of said elevator by means of screws or bolts. On the lower end of the straight portion 15 of the plunger 14 there is mounted. an adjustable collar 17 between which and the arm 16 a helical compression spring 18 is interposed. A second helical compression spring 19 is supported upon the upper face of said arm 16 and is adapted, as the latter travels upwardly relatively to said plunger, to be thrown into engagement with an adjustable collar 20 on said plunger 1 The said elevator 1'? is actuated by the rocking arm 2-1 of the machine, the latter being connected with said elevator by means of a link 23.

ll'hile the operation of the device will be easily understood from the foregoing description the same will be reviewed briefly for convenience.

As the elevator 17 rises the plate or arm 16 will raise the spring 19 into engagement with the collar 20 and thereafter a continued upward movement of the elevator will serve to raise the pliuiger 15 and thereby the plunger 1 to the upper limit of move ment of the latter. The elevator then makes its downward movement but the frictional contact between the plunger 1 and its guides produced by the pressure of the spring 5 upon said plunger the latter is supported at the upper limit of its movement until, during the downward movement of the elevator 17, the arm 16 engages the spring 18 whereupon the said plunger 1 will move downwardly and during such downward movement the knife wiper 7 will cleanse from the edges of the trimming knives 8 the shavings of type metal adhering thereto. By means of the connections for operating the plunger 1 shown, and which provide for lost motion between the same and the arm 16 the movements of said plunger are properly timed relatively to the ejection of slugs through the slot between said trimming knives 8.

The particular purpose of the spring 1%) is to throw the wiper to the upper limit of its movement even though the elevator should not rise sufficiently high to accomplish this without the aid of said sprin whereas when the elevator does rise sutliciently high during its ordinary stroke the said spring it) will, after the elevator has reached the upper limit of its movement. coi'npress against the collar 20 and thus avoid putting a strain on the device. The upper limit of movement of the plunger 1 and wiper T is determined by engagement of the collar 13 with the upper guide 2, as will be apparent.

The necessity for the spring 19 would arise in the case of repeating a line from the two-letter matrix in the upper position.

The invention is very simple, and 0thcient, and by reason of the flexibility provided for by means of the springs 18 and 19. may be easily adjusted and fitted to any existing linotype machine without requiring' any change in construction thereof or very fine adjustment aside from attaching the plate 16 and flat spring 5.

I claim as my invention:

1. In a linotype machine having a pivoted vise frame carrying a reciprocable partand the trimming knives and having a rocking arm for actuating said IQClPlOCnlDlG part, a reciprocable plunger rectangular in crosssection and carrying a wiper adapted to travel over the cutting edges of said trimming knives, a channeled guide for one end portion of said plunger in a part of said vise frame contiguous to said trimming knives, the other end portion of said plunger bearing upon. a part of said vise frame contiguous to its pivot, a flat spring mounted at one end upon a part of said vise frame contiguous to the pivot thereof and hearing at its other end upon said plunger between the end portions thereof for holding the lower end portion thereof in contact with the vise frame and causing the wiper to bear upon the trimming knives, said spring having side flanges for preventing lateral movement of said plunger and constituting the same a guide for the plunger, the flat surfaces of the latter coacting with its guides for preventing rotation thereof relatively to said guides, and connection between said reciprocable part and said plunger for actuating the latter.

2. In a linotype machine having a pivoted vise frame carrying a reciprocable part and the trimming knives and having a rocking arm for actuating said reciprocable part, a reciprocable plunger carrying a wiper adapted to travel over the cutting edges of said trimming knives, guides for said plun ger a spring arranged to bear on said plunger between two of its guides to maintain said wiper in contact with said cutting edges during travel thereof over said edges and maintaining said plunger engaged with said guides, an arm having a portion parallel with said plunger and connected with said plunger between the ends of the latter and between the guides therefor, a pair of collars on the portion of said arm parallel with said plunger, and a member carried by the first elevator having sliding engagement With the last-named portion of said arm between said collars for imparting re ciprocatory movement to said plunger, said collars being removable and enabling removal of the device from the machine by removing the endmost collar from said arm.

In testimony whereof I have signed my name in presence of two subscribing Witnesses.

lVILLIAM C. REDFIELD. Witnesses M. M. BOYLE, RUDOLPH Wu. LOTZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

